Softmodded wii w/homebrew channel but need help with iso games?

ive got 4.2E wii system softmodded with homebrew channel and different themes........ although when it comes to actually playing my wii iso games Backup launcher 0.3 GAMMA doesnt recognize my iso games which i install on DVD-r Verbatim brand (4.2g) files corectly neither does gecko so does anyone know anything else i could possibly do thanks for your feedback